Gas-heater.



No. 745,673. PATBNTED DEC. 1, 190s.

' J. G. Banegas. I

GAS HEATER.

APPLIGATION FILED JUNE'ZS, 1900.

H0 HODEL.

z m 1 1 G U 1 t am Hom majo UNiTnD lPatented. December 1, 1903.

JAMES G. RODGERS, OF SPRINGFIEL, OHlO.

GAS-HEATER.

. SPECIFICATION forming part of Letters Patent No. 745,673, dated December 1, 1903.

Application filed J' une 25, 1900. Serial No. 21,552; (No model.)

To @ZZ whom may concern:

Beit known that LJAMns G. Roncnns,a citizen of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful lmprovements in Gas-Heaters, of which the following is a specification.

My invention relates to that class of radiating-heaters in which a casing, usually of thin or sheet metal, is heated by a burner for burn ing gas or vapor therein; and it consists in a heater having a restricted exit and a casing so constructed as to retard the flow of heated gases to the exit, whereby the combustion of Y entrance of the gas-pipe leading to the burner a, of any suitable character, the said base being mounted upon a suitable support or feet b. The gas mixed with a proper proportion of air will be supplied to the burner by a mixing-tube f, which will preferably enter the casing A through the bottom, and a space.

will preferably be left around the tube f for the admission of air. Also openings g may be formed in the sides of the casing near the bottom for the admission of air to aid in the perfect combustion of the fuel. At the top of the base there is a curved plate c inserted in the top, with its ends projecting downward, forming flanges e, as shown in Fig. l.

Above the base A is an extension B, consisting of one or more inverted-U-shaped casings closed at all of the sides and communicating at the lower ends with thev base and having an outlet .fr at the top, thus forming side fines extending upward from the base and meeting at the top adjacent to the outlet It'will be observed that the fines y are fiat and the space between the inner and outer plates is very narrow. .The superficial area of the flue is, however, quite extensive, and the narrow space between the plates, together with the restricted outlet insures that the heated gases will in their passage through the flue contact with all the kinner surface of the boundary-wallsof the due and move slowly thereover, thus adording ample time for the radiation of their heat through the walls of the fines.

The curved top or plate o serves to deflect the dame down upon the burner, and by the introduction of air through the openings g and the space around the mixing-tube f the air mixes with the deflected flame and insures perfect combustion.V This is further aided by the passage of the heated gases being retarded by the narrow ues leading from the top of the combustion-chamber. The bottom and sides as well as the top of the base A thus become thoroughly heated, the said curved plate acting with a reverberati-ng effeet, tending to prevent the rapid flow of the gases to the side dues y y, up which, however, they iinally pass to the outlet to. By extending the ends of the plate c downward, forming flanges e, as shown in Fig. 1, the heated gases are prevented from flowing too directly to the fines y y andare retained in the base, and the rapidity of their flow in the dues is so diminished that a greater heating eect is secured, so that the gases will pass from the outlet m in a much cooler condition than would otherwise be the case, and the surfaces of the heater are much more highly heated, and the heating is much more effective than otherwise would result.

It will be seen that the extension B or each section thereof has an outer and an inner curved radiating-surface, as well as two end faces also constituting radiating-surfaces, so that in a heater of very small dimensions I am enabled to secure va much larger surface for radiation than can be obtained with many .of the older forms and constructions.

In actual tests of aheater constructed in accordance with my invention, with no chim- IQO Vithout limiting myself to the precise construction and arrangement of parts shown and described, I claiml. A heater having at hollow base A, a. curved top plate c, and a plurality of hollow linverted-U-shaped extensions B, each communicating with the base at opposite sides of the vpleite c, and a burner Within the base, substantially as set forth.

2. A heater having a hollow base, a curved top plate c, inverted-U-shaped extension B communicating with the base at opposite sides of the plate c, and flanges c, substantially as set forth.

In testimony whereof I have signed my l5 name to this specification in the presence of two subscribing Witnesses.

JAMES G. RODGERS.

Witnesses:

ROBERT C. RoDGERs, 'A. P. SINN COCHRAN, Jr. 

